Start-Up Oil Pressure

[Westfaling]

Has anyone ever fitted one of those pre-lube oil pressurisation kits?
Like This:

http://www.engineprelube.com/

(or similar)

Nick

[wilf]

I had an "accusump" unit on the Cobra.

It meant that the engine never started without oil pressure. As it was a rather rare and expensive 7litre yank V8, I thought that worthwhile. It also protected it from oil pump starvation on the track, which did happen a couple of times under extreme cornering unlikely to occur on public roads, despite a special sump supposedly proof against such events.

Of course, millions of production engines run billions of miles without one.

[Motorsport Micky]

Nope...but reading the blurb it seems to have a predisposition to oil pressure as if this prevents anything, rather than flow, it even suggests you could run a thicker heavier oil, not sure of it's benefits.

Micky

[Westfaling]

Only real benefit that I'm interested in is on initial start up when, according to oil companies, most engine wear occurs. I like the idea of always having oil pressure on start up.
Nick

[staginhiding]

I guess you could just fit a switch to stop the Stag fuelling and then let the oil pressure build up on cranking..
cheap alternative.

Sam

[Ian Durrant]

I guess you could just fit a switch to stop the Stag fuelling and then let the oil pressure build up on cranking..
cheap alternative.

Sam

I have one of those, I think they call it "the choke"

But seriously, when mines been standing, I crank it over with the choke in, until pressure starts to build then pull the choke out and it starts. I don't do it all the time (otherwise the unburnt fuel from when its cranking, would probably do more harm than good).

I did read about an old Rover that used the oil pressure switch to complete the ignition circuit so that it wouldn't start until the oil light went out.

[staginhiding]

I guess with my suggestion you would need to flick the switch on shut down,to allow the fuel to run out or as you say Ian you will end up giving the bores a wish..

[wilf]

I can't see that, with the choke "off", enough fuel would be drawn in at cranking speeds to give a problem.

Have to say, that is how I start mine up from cold - leave choke off, crank until oil light goes out, then pull choke out and off she goes.

[Motorsport Micky]

As Wilf says millions of production vehicles run billions of miles without anything special being fitted or the owners agonising about it as we are here. How many lifetimes do you have to wear it it out ?

Unless used for a special application as in Wifs case I think there are other things I need to do.

Micky

[ukbiggles]

When my engine was rebuilt by our local Stag repair man, he advised the method used by Ian and Wilf, so I use that when it has been standing for a while.

Gord

[Bob Heritage]

I can't see that, with the choke "off", enough fuel would be drawn in at cranking speeds to give a problem.

Have to say, that is how I start mine up from cold - leave choke off, crank until oil light goes out, then pull choke out and off she goes.

Same here, I have always induced oil pressure before starting by that method.

Bob

[milothedog]

Most (if not all) modern common rail Diesels work on this principle. No oil pressure seen by the engine ECU no fuel is delivered to allow it to start.


Ian